Careful when buying submersible pumps. Many of them claim to be submersible pumps when they are not, ie, you can’t actually submerge them, while others, if you read the fine print, say that they are designed to “remove water” or they are “Dewatering pumps”. Often times if you look carefully enough, they’ll say something in the fine print like - “Has not been tested in swimming pools or spas.” That is a dead give away that the pump is not designed for submerged, continuous use.
I had a cheap 1/4 HP submersible that I used a lot to move water. When I started submerging it in my pool, I found that it would occasionally trip the GFCI outlet it was on. I later found out that it’s not really designed for continuous, submerged draining applications. True submersible pumps have to be designed with specially sealed enclosures and special motor wire insulation to be considered “submersible”. So I now have a much more beefy 3/4 HP pump with a 2” discharge that is designed for submerged applications.
Just a warning.